Bookbinding



(No Model.) 7

J. P. BRENNAN.

BOOKBINDING. No. 493,396. Patented Mar. 14, 1893..

13) 1 LXQW" BEE; W. k MWW Haw-Lumen msnmowm u. c.

PATENT OFFICE.

JOHN P. BRENNAN, OF AKRON, OHIO.

BOOKBINDING.

SPECIFICATION forming part Of Letters Patent No. 493,396, dated March 14, 1893.

Application filed May 7, 1892. Serial No. 432,198. (No specimens.)

To all whom it may concern:

Be it known that 1, JOHN P. BRENNAN, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful Improvement in Bookbinding, of which the following is a specification.

My invention has relation to improvements in books and binding in that class of books of unusual weight used for accounts and records, in which the sections of leaves or signatures are attached to stubs bound in the book back forming a hinge which permits the opposite leaves to lie fiat wherever the book is opened.

The object of my invention is primarily to produce, as an improved article of manufacture, improved stubs for the class of books designated, and secondarily, with such improved stubs and the manner of constructing and uniting them together and connecting them with the binding bands and signatures to construct a book of great strength, wherein the leaves will not sag, which shall lie flat wherever opened; present no projecting edge between the opened leaves, and which shall combine the advantage of a continuous stub, with the facility of construction of separate stubs.

To the aforesaid objects myinvention consists in the peculiar and novel construction, arrangement and combination of parts hereinafter described and then specifically pointed out in the claims, reference being had to the accompanying drawings forming a part of this specification.

In the accompanying drawings which illustrate successive steps in the construction of the stub and its attachment to other parts, and in which similar reference numerals indioate like parts in the different figures: Figure 1, is a portion of the stub folded once; Fig. 2, the same twice folded; Fig. 3, the same folded into a W, and sawed ready for use; Fig. 4, the same attached to the binding band and signature, and a second stub in position to be added; and Fig. 5,two stubs united and attached to the binding band and signatures.

The stub 1, is made preferably of a strip of fine, tough paper folded in three equal parts in the same direction from the ends inward,

the overlying ply being coated on each side of its edge with narrow stripes 2, of adhesive material, as mucilage or glue, which attaches that edge to the intermediate ply, leaving the adhesive material on its opposite face to dry, and for a purpose to be stated. This threeply strip is then folded in the center in one direction, and between the center and ends in the opposite direction, forming in cross section a letter W, with the exposed stripe 2, of adhesive material, on the inside of one of the arms, as shown in Fig. 3. In one-half the stubs for the determined book, cuts 3, are sawed in the two folds corresponding to the bottom of the W, as shown in Fig. 3, and in the other half corresponding cuts in the opposite fold and two edges as shown in the detached inverted stub in Fig. 4:.

In building up the book, a single stub 1, having the saw cuts in the two folds corresponding to the bottom of the W, is placed with those folds upon the binding band at, and the first fold sewed thereto in the usual manner of attaching signatures to binding bands; and to the central upper foldisstitchedasection of the leaves, or signatures, 5, as shown in Fig. 4. One of the stubs containing saw cuts in the opposite edges is then inverted, the adhesive stripe on the free end of the first stub moistened and one edge of the inverted stub placed and pressed againstit. The second fold of the first stub is then pressed against the first fold and sewed to the binding band 4, and a second signature 5, sewed to the first outer fold of the second stub, as shown in Fig. 5. The adhesive stripe on the free end of the second stub is then moistened,

and the one side of a third stub turned and out like the first, inserted under and pressed against it, and the center fold of the second stub drawn up and sewed to the binding band, and a third signature sewed to the second fold of the second stub. This process is repeated, each alternate stub being inverted and interlocked with and fastened by adhesive material to the free side of the last stub, and signatures attached to the successive front folds of the stubs until the required number of pages is secured. By this method of construction the stubs are attached to the binding bands and signatures with the same fa- IOC cility as other single stubs, while by being interlocked and fastened by adhesivematerial they have all the firmness and strength of stubs of a continuous strip of material; and it will be noticed that no projecting edge of any unattached stub is seen between the signatures when the book is opened. As the leaves after being frequently opened never lie as closely as when the book is first coma pleted, I preferably so arrange the number of leaves of each signature relatively to the nu mber of plies of its respective stub, that the latter shall slightly exceed the former, as for example in the illustrations given, four leaves are folded to constitute the signature of eight leaves, while each stub exceptthefirst contains nine plies, and .the' first stubwiththe freeend: next the'cover has thesame nuin: t

a stub for a flat-opening book consisting of a .& strip of material. folded to form three equal. I

lu nto set my hand.

to formthree equal plies, folded in W form,

the inner edge of one of the outer folds having a. coating of soluble adhesive material,

each alternate stub inverted, and all having saw notches in one direction for attaching the signatures, as set forth.

4. A book having independent sections and stubs, the stubs being in form of a letter W,

each alternate stub inverted and interlocked 2 5. A book-composedi'of independent stubs in form of thezletter. W,=-,each alternatestub inverted'and interlocked with andzattachedw to adjacent-stubs by adhesive materiah and independent signatures attachedlto thesfront folds of said stubsand binding bands to the ibacklfolds as set forth.

1 In testimony that I claim" the above Ihere-i JOHN P. BRENNANQ In presence of- C. P. HUMPHREY,

C. E. HUMPHREY. 

